Book-sewing machine



(NG Model.) '4 Sheets-Sh'e-t 1.

D. M. SMYTHL BOOK SEWING MACHINE.

Patented Feb. 7, N93.

Tus Nenms crans co vauro-Lum.. wxsnwm'ou, n. c.

4 SheetS-Sheet 2.

11M. SMYTH.v Booz SEWING Mmmm.

Patentedveb. 7, i893.

Tm: mams Pire-7:. coJHmuLmm, wammmcm, n cv (Na Mode.) v 4 Sheets-v-Sheet 3.

llfsnm'm, l1200K SEWING-m0511515 N0. 491,228. Emma Een?, i893.

min.

lll/1lllrIlIg/flllulllllfzinvii/[111111111 'Unirse Stre'rns Persi* einen@ DAVID lil.. SMYTH, OF NORTHVFOOD, NEW HAMPSl/HRE, ASSIGNOR TO THE SMYTH MANUFACTURING COMPANY, OF HARTFORD, CONNEOTXGT.

BOOK-SEWlNG MACHlNE.

SZEEGIFIGATION forming part of Letters Patent No. 491,228, dated February 7, 1893. Applieetiion led July 5, 1892. Serial llo. 438,865. (llo model.)

To ai?, whom t nen/,y concern.- E, and l remark that the mechanism herein- Be it known that l, DAVID lil. SMYTH, e citititer described that presses upon the sewed nen of the 'United States, residing at Northsheets to force them down to e given posi- Wood,in the county ot Rockingham and Stete tion, carries down the second table il and 55 of Newlleinpsliire, have invented an improve simultaneously elevates the receiving table G. ment in BooleSeiving Machines, of which the The needles K are more or less numerous following is e speeiiieation. Irecording to the size of the book that is to be In the Patent No. li granted to ine Febserved, and these needles l ere received et rnery 25, 1868, a mec-bine is represented ior their lower ends into e needle ber L that is 6o 1o sewingbooks with ereciproceting needle pnssbehind the plete D, end this needle ber is reing along the fold of the signature, and in Petceived into guides L', so that it can be raised ent No. @Lli granted to ine Jennery 8, 1869, or lowered, end the needles that come toward the sheets to be served ere laid upon one table the top end bottom of the signatures are mede and the sewed signatures nre received upon with eyes neer the points for the threads with 65 another teble, one passing` upwardly es the which the sewing is performed. The needleother passes downwardly, and in Patent No. bei' L is raised by the earns 0,6 on the shaft R 35,616, greeted to ine September 2, 1890,1wo acting npon the rods ci* end seid needle ber is needles are represented passing in opposite brought down by the springs a8. The interdirections into the fold ci the signature. In mediate needles are preferably larger end 7C zo my present invention the sheet is laid open each is provided with en eye neer the peint, while being served end the thread is carried into which cen be inserted e cord or tape, so along byloopers eotingin opposite directions, that such cords or tapes can be drawn into so that the sewing is Uniform, there being the sew-ents in the seWed signatures after catch stitches passing ont from one signetnre each volume or e number of volumes lieve 7 5 into the nent et the end sew-cuts in the rebeen served, such operation being performed spective signatures, and the sheet after it has by rotating the shaft 2 of the gear Wheel I, so been served is folded over end pressed down as to run np the table H and strip the signereedy to receive another Signature in position. tures oft from the row of needles K, and in this ln the drervings Figure 1 is e general plan operation the receiving teble G is lowered so 8o 3o view. Fig. 2 is en elevation. Fig. 3 isa. veres to be ready for receiving another pile of ticel section et the line fr in. Figs. end 5 unsewed signatures. are diagrams illustrating the positions of the The intermediate DGGflGS K we provided parte es the sewing progresses, end Fig. 6 is with hooks 3 at the upper end, so that such e perspective vien in enlarged sine of the hooks retain the threads with which the books 85 looper. ere served, es hereinafter described, and seen he bed A is supported by esuiteble freine threads ere leid in the folds of the signatures B, and upon the bed neer the opposite ends and between the needles and such folds, es am the brackets G C having en open space represented in Figs. 4 and 5, the needles thernbetween thein, end there is e central plete D selves being within the sew-ents and behind 9oA 4o between the two brackets C Cand ever-tical the crossing threads. There 1s e. turner `M guide er fence E adjacent to the beck of the pivoted et e which 1n its normal position is folded signatures F es they lie upon the reslightly above the upper end of the pletel), eeiving table G, and there isa second table H and it may he swnng over, es indicated by upon which the sevfed sheets are received. the dotted lines F1553, and it passes above g5 ribes@ Sables G and H ere provided with verthe upper ends o the needles K, end there tical guide racks G ll' et opposite sides of ere lingers N that are connected tothe bei' O, the geen: wheels l, so that es one table H ie end these fingers extend across the top edge depressed by the accumulation thereon of of the plete l) and iep npon the beck folded served eignetnres, the other table G is raised edges of the sewed signatures, end such finrc f 5o np so that the top signature in the pile of l gers ere preferably notched, as indicated in signatures is neer the upper edge of the fence Fig. l, adiacenti to the respective needles.

The bar O is supported by the springs P, and it is lifted by the rods P that extend below the springs and are acted upon by the cams Q upon the main shaft R, and there are stationary cams and projecting studs G upon the upper ends of the springs P and adjacent to the stationary cams 5, so that when the fingers N, bar O and springs are lifted by the action of the cams Q the fingers are .drawn back by the studs 6 sliding over the stationary cams 5, and in so doing the ends of the fingers N are drawn back from beneath the top signature and-behind the fold of that signature, so that when the signature is folded over by the action of the turner M at the back fold, the fingers N pass clear of the back of the signature and rise above the same, and then such fingers come down upon the signature and press the signature downwardly until it is about the saine level as the top edge of the plato D. During this operation the springs P have yielded, and when the studs 6 pass above the top edges of the stationary cams 5, the springs P throw the [i n gers N over the back edge of the folded signature, and as the parts come down, the studs G move upon the back surfaces of the stationary cams 5 until such studs pass below the lower edges of such stationary cams and the springs P return the parts to their normal positions.

ln order to actuate the turner M there are rods 7 connected by a cross bar S with the springs l?, and hence such rods frise and fall with the springs when moved as aforesaid, and these rods 7 are immediately below the lever arms extending' out from the pivots fl and carrying the turner lll, so that as the iingers N are lifted, the turner M is lifted more rapidly, because the rods 7 are near the fulcrums or pivots et, hence the turner M is caused to swing over into the position shown by the dotted lines in Fig'. 3 and carry with it the half of the folded sheet or signature.

The loopers S are supported by the looper bars T that travel through the guides 9 upon the brackets C C', and to these loopers and looper bars motion is communicated by the levers U U and links V V that receive motion .from the cam XV upon the main shaft R, and these loopers S are moved simultaneously toward and from each other, and the connections between the looper bars and the links are fitted with springs l0, so that the parts may yield slightly, and at the outer ends of the looper bars there are cams ll that come into contact with the stationary pins l2 on the respective brackets C C. he looper at the inner end of each bar is formed as a finger or fork, shown in larger size in Fig. 6, one finger of the looper being in vline with the rod out at one side thereof, and both fingers are made with offsets or shoulders around which the threads draw, as shown in Figs. 4L- and 5.

The mode of sewing is as follows: All of Lhe signatures in the folded condition are :hanneled across the back with saw-cuts as usual, and the unsewed signatures are placed upon the receiving table G, and the saw-cuts correspond in position to the respective needles K, and the upper ends of these needles K extend above the top edge of the plate D and the turner M. The attendant takes 'one signature and opens it out and lays it upon the turner and upon the table H or the previously sewed signatures and the upper ends of the needles pass through the sawcuts and project above the sheets of the signature. The position of the open sheet is indicated by the dotted lines in Figs. et and 5. The needle bar L and needles K now descend slightly sufficiently for throwing outloops of thread from the eye-pointed end needles K, and the loopers S come up in opposite directions and take the threads from the end needles, such loopers at this time standing with the linger of the looper directly above the looper itself, as indicated in Fig. 4, and these needles move simultaneously toward each other until the loopers reach the two adjacent' needles near the middle of the back of the signatures, at which moment the cams ll running upon the pins l2 give to the loopers a quarter rotation, turning the lingers of the loopers down horizontally and throwing the loops of threads over the hooks 3 of the two middle needles, and then the loopers are drawn back, but the slots in the cams 1l are so shaped that the loopers do not commence to rotate back to theirnormal positions until the loops of thread have been left in the hooks 3 of the needles. The needles K now draw down slightly and simultaneously therewith the springs P are raised, so that the fingers N are drawn back from beneath the fold of the open sheet, and the turner M folds over one half of the folded sheet upon the other half of the folded sheet and over the table H, and the loopers have by this time drawn out from between the fold of the sheet, leaving the threads from the end eye-pointed needles around the hooks of the two middle needles, and the adjacent threads of the loops of threads in the hooks of theintermedate needles; and then the lingers Nspring back over the sewed signature, and as they descend they press down the said sewed signature and hold over the needles, which by this time have risen to their highest point and draw down slightly to throwout the loops of thread from the end needles, and the loopers come forward toward each other with the forks of the loopers up edgewise, the fingers of the loopers being directly above the looper bars, so as to enter the loops of thread and carry the same toward each other as before described, and the sewing operation is thus continued until the desired number of sheets have been or tapes into the places that had been occupied by the needles within the saw-cuts 01' roo IIO

channels and between the bases of such sawcuts or channels and thelongitudinal threads that lie within the folds ofthe signatures. It is to he observed also that the tapes or cords that are drawn in hy the two middle needles are drawn into the loops that have loeen left around such needles in the sewing operations as before described.

In Figs. d and 5 one end of the signature is shown and a portion of the hack of such signature to near the middle thereof is represented, it being understood that the instrumentalities acting upon the other end ere the same, so that the sewing at the other end of the haci: corresponds to that illustrated in said figures, hence in all instances the sewing threads pees at the end saw-outs from one signature to the next, theloops of such threads Where they come toward each other near lthe middle of the oaok ere around the middle oords or tapes, and vthe intermediate cords or tapes pass along inthe sew-cuts between the hottorns of the saw-ents and the double threads in the folds of the signatures; and there may he any desired nuinbeioi" these intermediate saw-cuts and tapes that are drawn in hy the needles, as aforesaid.

l elaiin as my inventionz-A l. The ooinhination in a hook sewing maohine of a needle her and needles carried thereby and arranged in groups or series, the end needle in each group being eye pointed and carrying' a thread and the intermediate needles being hooh pointed, and loopcrs pass ing in opposite directions toward eeoh other and laying loops oi' thread over the end hook pointed needles of each group, and mechanism for turning one half of the folded signeture over on the other half, and mechanism for actuating the needle bar and loopers substantially as specified.

2. The combination in a bool; sewing inaehine with the receiving and second tables for the unsewed and sewed signatures, of a needle har and vertical needles in groups adapted to pass through the sawcuts in the signatures, the end needles in each group being eyepointed and carrying threads, the other needles being hook pointed, loopers each having e finger projeoting near the end and mechanism for moving the same toward and from each other and for giving to the loopers a partial rotation as they come nearest together for passing the loops of thread taken from the eye-pointed needles over the hooks at the ends of the groups, and a turner for turning over the folded signature, the one haii' upon the other half, and fingers and mechanism for actuating the same, whereby the served signatures end the table supporting the same are pressed downwardly by the action of the ngers, substantially as set forthe Signed by me this 25th day of June, 1392.

` DAVID M. SMYTH.

W'itnesses:

CHARLEs E. Gnoss,

WM. MERCER Dricn. 

